Validation of the Pediatric Quality of Life Inventory™, Neuromuscular Module, version 3.0 in Spanish for Argentina.

OBJECTIVE To assess the psychometric properties of the Pediatric Quality of Life Inventory™ (PedsQL™ 3.0), Neuromuscular Module, version in Spanish for Argentina, for children aged 2-18 years with neuromuscular disease. POPULATION AND METHODS Observational, analytical, prospective validation study conducted in Hospital Garrahan between March 19th, 2019 and March 9th, 2020. The retest questionnaire was administered 10-15 days later to validate it among patients who reported a stable condition. RESULTS A total of 185 children and their parents participated. In terms of the questionnaire's feasibility, its content was easily understood by participants. Its reliability was acceptable, with an internal consistency of 0.82 among children and 0.87 among parents and a retest intraclass correlation coefficient of 0.70 among children and 0.82 among parents. In relation to the construct validity, 8 of the 11 hypotheses established (72.7 %) were confirmed. CONCLUSION The questionnaire's psychometric properties were validated.